Possible Causes

Possible causes are:

• Binding or bent throttle linkage (P0121 or P1124).
• TP sensor not seated properly or tightened down (P0122, P0123, P1121 or P1124).
• Throttle plate less than closed throttle position (P1124).
• Throttle place/screw misadjusted (P1124).
• Damaged TP sensor (P0121, P0122, P0123, P1121 or P1124).
• Damaged PCM (P0122, P0123 or P1124).
• Air leak between Mass Airflow/Intake Air Temperature (MAF/IAT) sensor and throttle body (P1121).
• Damaged MAF sensor (P1121).
• TP sensor loose pins (P1120).
• Intermittent open or short in TP sensor (P1125).
• Frayed wire (P1120).
• Corrosion on TP sensor, PCM or harness connectors (P1120).
• VREF harness opens or shorts to TP sensor (P0122 or P1120).
• Open TP SIG circuit or TP circuit open to PCM (P0121 or P0122).
• Open SIG RTN harness circuit (P0121 or P0123).
• TP circuit short to ground (P0122).
• TP circuit short to power (P0123).
• VREF short to power (P0123).
• VREF short to SIG RTN (P1120).
• Poor continuity through TP sensor connectors or harness (P1125).